[wesleyc]

Driving 10 minutes then checking level works good in summer with oklahoma temps in the mid 90 degrees. In fall and winter it's surprisingly hard to get the oil temp high enough for a accurate check. Last winter I drove to a town 30 miles away. Checked oil when I arrived home. It showed to be too high. Oil was circulating to oil cooler but not hot enough to start the fan. Changing from 0-40 to 15-50 oil had a little to do with it to. Level gauge and dipstick were more accurate in less time with 0-40. No way I would go back to 0-40 though